-371 BLACK BUNA 90D O-RING

H90371 is an AS568-371 black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 8.475 in (215.27 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 8.895 in (225.93 mm). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs and low compression set under sustained load. It resists petroleum-based oils, many alcohols, and propane and butane. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).

It sees regular use in general industrial maintenance, agricultural equipment, and fluid power.

Order part number H90371, sold individually. Unit weight is approximately 21.867 g and nominal inside diameter is listed as 8 1/2 inch. Check the compound against your process media, pressure and temperature before committing to a design.